/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.persistence.entity.data.impl;

import com.je.bpm.engine.history.HistoricTaskInstance;
import com.je.bpm.engine.impl.HistoricTaskInstanceQueryImpl;
import com.je.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl;
import com.je.bpm.engine.impl.persistence.entity.ExecutionEntity;
import com.je.bpm.engine.impl.persistence.entity.HistoricTaskInstanceEntity;
import com.je.bpm.engine.impl.persistence.entity.HistoricTaskInstanceEntityImpl;
import com.je.bpm.engine.impl.persistence.entity.TaskEntity;
import com.je.bpm.engine.impl.persistence.entity.data.AbstractDataManager;
import com.je.bpm.engine.impl.persistence.entity.data.HistoricTaskInstanceDataManager;

import java.util.List;
import java.util.Map;

import static java.util.Collections.emptyList;

/**
 *
 */
public class MybatisHistoricTaskInstanceDataManager extends AbstractDataManager<HistoricTaskInstanceEntity> implements HistoricTaskInstanceDataManager {

    public MybatisHistoricTaskInstanceDataManager(ProcessEngineConfigurationImpl processEngineConfiguration) {
        super(processEngineConfiguration);
    }

    @Override
    public Class<? extends HistoricTaskInstanceEntity> getManagedEntityClass() {
        return HistoricTaskInstanceEntityImpl.class;
    }

    @Override
    public HistoricTaskInstanceEntity create() {
        return new HistoricTaskInstanceEntityImpl();
    }

    @Override
    public HistoricTaskInstanceEntity create(TaskEntity task, ExecutionEntity execution) {
        return new HistoricTaskInstanceEntityImpl(task, execution);
    }

    @SuppressWarnings("unchecked")
    @Override
    public List<HistoricTaskInstanceEntity> findHistoricTasksByParentTaskId(String parentTaskId) {
        return getDbSqlSession().selectList("selectHistoricTasksByParentTaskId", parentTaskId);
    }

    @Override
    @SuppressWarnings("unchecked")
    public List<HistoricTaskInstanceEntity> findHistoricTaskInstanceByProcessInstanceId(String processInstanceId) {
        return getDbSqlSession().selectList("selectHistoricTaskInstancesByProcessInstanceId", processInstanceId);
    }

    @Override
    public long findHistoricTaskInstanceCountByQueryCriteria(HistoricTaskInstanceQueryImpl historicTaskInstanceQuery) {
        return (Long) getDbSqlSession().selectOne("selectHistoricTaskInstanceCountByQueryCriteria", historicTaskInstanceQuery);
    }

    @Override
    @SuppressWarnings("unchecked")
    public List<HistoricTaskInstance> findHistoricTaskInstancesByQueryCriteria(HistoricTaskInstanceQueryImpl historicTaskInstanceQuery) {
        return getDbSqlSession().selectList("selectHistoricTaskInstancesByQueryCriteria", historicTaskInstanceQuery);
    }

    @Override
    public List<HistoricTaskInstance> findHistoricTaskInstancesAndVariablesByQueryCriteria(HistoricTaskInstanceQueryImpl historicTaskInstanceQuery) {
        // paging doesn't work for combining task instances and variables
        // due to an outer join, so doing it in-memory
        if (historicTaskInstanceQuery.getFirstResult() < 0 || historicTaskInstanceQuery.getMaxResults() <= 0) {
            return emptyList();
        }

        int firstResult = historicTaskInstanceQuery.getFirstResult();
        int maxResults = historicTaskInstanceQuery.getMaxResults();

        // setting max results, limit to 20000 results for performance reasons
        if (historicTaskInstanceQuery.getTaskVariablesLimit() != null) {
            historicTaskInstanceQuery.setMaxResults(historicTaskInstanceQuery.getTaskVariablesLimit());
        } else {
            historicTaskInstanceQuery.setMaxResults(getProcessEngineConfiguration().getHistoricTaskQueryLimit());
        }
        historicTaskInstanceQuery.setFirstResult(0);

        List<HistoricTaskInstance> instanceList = getDbSqlSession().selectListWithRawParameterWithoutFilter("selectHistoricTaskInstancesWithVariablesByQueryCriteria", historicTaskInstanceQuery,
                historicTaskInstanceQuery.getFirstResult(), historicTaskInstanceQuery.getMaxResults());

        if (instanceList != null && !instanceList.isEmpty()) {
            if (firstResult > 0) {
                if (firstResult <= instanceList.size()) {
                    int toIndex = firstResult + Math.min(maxResults, instanceList.size() - firstResult);
                    return instanceList.subList(firstResult, toIndex);
                } else {
                    return emptyList();
                }
            } else {
                int toIndex = Math.min(maxResults, instanceList.size());
                return instanceList.subList(0, toIndex);
            }
        }

        return instanceList;
    }

    @Override
    @SuppressWarnings("unchecked")
    public List<HistoricTaskInstance> findHistoricTaskInstancesByNativeQuery(Map<String, Object> parameterMap, int firstResult, int maxResults) {
        return getDbSqlSession().selectListWithRawParameter("selectHistoricTaskInstanceByNativeQuery", parameterMap, firstResult, maxResults);
    }

    @Override
    public long findHistoricTaskInstanceCountByNativeQuery(Map<String, Object> parameterMap) {
        return (Long) getDbSqlSession().selectOne("selectHistoricTaskInstanceCountByNativeQuery", parameterMap);
    }

}
